Baffle construction for boilers.



E. C. MEIER. BAFFLE CONSTRUCTION FOR BOILERS.

APPLICATION FILED MAR. 2|. I917- Patented Mar. 26, 1918.

2 SHEETSSHEET l- E. C. MEIER.

BAFFLE CONSTRUCTION FOR BOILERS.

APPLICATION FILED MAR. 21. 19:1.

LQWAQQ, Patented Mar. 26, 1918.

2 SHEETS-SHEET 2.

snow/11M Edd/WWW I36 EDW C. MEIER, OF PHOENIXVILLE, PENNSYLV BAIFLECONSTRUCTION FOR BOILERS.

Specification of Letters Patent.

Patented lllar. 2d, 12 118.

Application filed March 21, 1917. Serial No. 156,283.

To all it may concern:

Be it known that I, EDWARD C. a

citizen of the United States, residing at Phoenixville, in the county ofChester-and State of Pennsylvania, have invented certain new and usefulImprovements in Balile Constructions for Boilers, of which the followingis a specification.

My invention consists of an improved bafie construction for boilers. Oneobject of my invention is to provide a bafie construction which will bestrong and durable and which can be quickly and cheaply,installed withina boiler.

Another object is to make a battle construction in such manner that itcan be readily secured between the tubes of water tube boilers and canbe easily adjusted into various positions along the tubes of theboilers. i

Another object of my invention is toprovide a specially constructeddividing bafie which will include fire brick so arranged that it willprotect its supporting structure against the direct heat and therebylengthen the life of. the latter.

These objects, and other advantageous ends which will be describedhereinafter, ll attain in the following manner, reference being had tothe accompanying drawings in which- Figure 1 is a sectional elevation ofa boiler illustrating my present invention.

Fig. 2 is a fragmentary perspective view showing my improved fire brickbafie which is supported by angle bars which extend from side. to sideof the boiler casing.

Fig. 3 is a fragmentary side elevation showing one of my improved baesas it appears connected to the tubes of a water tube boiler.

Fig. 4 is an enlarged section on the l" e g 4-4 or Fig.3.

Fi 5 i a hwnsverse section through one of the tubes and taken on theline 5-5 of Fig. 4.

Fig. 8 is a perspective view of an adjustable clamp which may be securedto a tube of a boiler unit as illustrated in Figs. 1, 8, 4, and 5. andwhich'serves to support the heme adjacent the tubes of the boiler.

. Refeng to the drawings, 1 represents the boiler casing having verticalfront, rear, and side walls, the rear wall 2 having an ofi-set orstepped portion 3 which connects with the upper erl portmn 4 of? andrear wall, the ofi-set portion being substantially horizontal andforming an indentation 5 in the rear wall.

An outlet passage for the products of combustion, is illustrated at 6,and a damper 7 is provided to re late the amount of opening through sa1doutlet passa e, it being noted that a flue (not illustrated) can connectwith said outlet passage and fit within the space provided by theindentation 5. g g

Two boiler units 8 and 9 are arranged within the casing 1, the boilerunit 8 comprising a plurality of water tubes 10 con- Ilecting at theirtop and bottom with drums 11 and 12. The boiler unit 9' includes aplurality of tubes 13 which connect at their top and bottom with drums14 and 15.

The 'drums 11 and 14 are connected by tubes 16, and the drums 12' and 13are connected by tubes 17, it being noted that the tops of the drums 11and 14 are also connected by a tube 18 which acts as an equalizing tubebetween the steam spaces of the drums 11 and 14.

leading therefrom, and the drums 12 and 15 have blow-0d pipes 20 and 21connecting therewith. The drums 11, 12, 14, and 15 are arrangedhorizontally and supported within the side walls, the drum 12 beingfurther supported by a pedestal 22 on the bottom of the casing.

The drums 11 and 12 are in difl'erent vertical planes so that the tubes10 extend at an incline toward the front wall 23 of the casing. Thisis-also true of the drums 14 and 15'so that the tubes 13 also extendat-an incline and substantially parallel with the tubes 10 of the boilerunit 8.

A grate 24 is providedadjacent the front wall 23 and at the bottom ofthe casing, thus producing a fire box 25'which is located forward ofthe'boiler unit 8. A bafie 26 is provided between the tubes 10 andextends upwardly from the drum 12 throughout a portion of the length ofsaid latter tubes, stopping short of the drum 11 so as to provide apassage 27 for the products of combustion rising from the fire box 25..

A has 28, extending between the oppositely disposed side walls of thecasing 1, is located between the tubes of the boiler units 8 and 9. Thisbaliie 28 is arranged as illustrated, substantially on a level with thetop of the hafie 26 and includes two rates at tea fire bricks 29 and 29which extend entirely across the boiler casing between the side walls.These rows of fire brick are supported by a supporting structure whichincludes a metallic plate '30 which forms a backing for the row 29 andextends from the bottom of said row to the bottom of the row 29, itbeing noted that a portion of the row 29 overlaps the back of the row29, thus producing a stepped formation.

Angle bars 31 and 32 embrace the lower rear corners of the rows of brick29 and 29 respectively and at their ends are secured to the side wallsof the boiler casing, another angle bar'31 being positioned under therow 29 and against the plate 30.

It will be noted that by forming thesupporting structure in the'abovemanner, it is protected, by the rows of fire brick 29 and 29 from thedirect heat of the products of combustion which pass upwardly over thebaffle 26 and through the passage 27. This bafiie 28 operates to dividethe products of combustion in a manner hereinafter set forth.

Another dividin bafile 33 is mounted below the baflie 28 an is of aconstruction substantially similar to said bafile 28 and includes tworows 34 and 35 of fire brick, the row 34 being backed by a. plate 36 andthe lower, rear corners of said rows being sup ported by angle bars 37and 38.

Another an 1e bar 39 fits under the row of bricks 35 an also bearsagainst the plate 36- so that the supporting structure for the baffle 33is identical with that described in connection with the bafiie 28. Thisbaffle 33 is located between the boiler units 8 and 9 and is arrangedadjacent the lower end of a baflle 40 which is positioned between thetubes 13 of the boiler unit 9 and extends downwardly from the drum 14.This bafiie 40, at its lower end, stops short of the drum 15 and thusprovides a passage 41 between its lower end and the drum 15.

The baflle 40 is made up of anumber of fire brick tiles 42 which aredesigned to rest against the slightly inclined tubes of the boiler unit9 and is composed of a plurality of superimposed rows of said fire bricktiles, it being noted that each of the tiles has curved portions 43 onone surface designed to correspond with the outer surface of the tubes(see Fig. 5). p

The lower row of tiles 42 has its bottom edge resting within theinterior angle of an angle bar 44 which extends transversely of theboiler casing and to the rear of said tiles (see Figs. 1, 3, 4 and 5).

Clamps 45 are adjustably secured to the tubes by means of bolts 46. Eachof the clamps is made in two sections 47' and 48 which are designed tosurround the tubes, the section 48 of each clamp having an upwardlyextending hook 49 designed to embrace the outer surface' of the anglebar 44.

As illustrated in Fig; 3, each of the tubes, throughout the width of theboiler unit and a ainst which the baflle tiles rest, is provlded with aclamp 45, but it will be understood that any number of clamps may beused according to the weight of the tile and size of the boiler. Forexample, in some instances it may be only necessary to use one clamp forevery other tube throughout the width of the boiler unit or even agreater distance may be had between the clamps 45.

It will be noted, furthermore, that if it is desired to shorten thelength of the baflle 40, one or more of the rows may be removed byloosening the clamps 45 and moving them in such position as 'to permitthe removal of the desired number of tiles 42 after which the clamps andangle bar 42 may be moved upwardly to again form the support for theshortened baflie.

It will thus be understood that by the provision of the adjustablesupport, the.

battle may be made of any length or held in any upright position betweenor ad acent the tubes of a watertube boiler. I thus provide a simpleconstruction which permits a b'afiie to be inserted between the tubes ofa tubular boiler and supported in any position within the length of thetubes.

With he ar angement of the baflies 26, 28, 33, and 40, the products ofcombustion from the fire box 25 are compelled to pass upwardly betweenthe tubes which are forward of the baffle 26, thence through the passage27 whereby the drums 11 and 14, upper portions of the tubes 10, and theupper portions of the tubes 13 which are forward of the baffle 40, areheated. Then they pass downwardly between the bafiies 26 and 40, and inso doing are split up or divided by the baffles 28 and 33 causing themto pass between the rear tubes of the boiler unit 8 and the forwardtubes of the'boiler unit 9.

Part of said products of combustionthen pass between the bafiies 26 and33 and serve to heat the drum 12 and adjacent tubes, thence moverearwardly and combine with the portion of product passing between thebaffles 33 and the baflie 40, then all of said products of combustioncombine and pass through the passage 41 and upwardly to the rear of thebafile 40 and finally pass out through the outlet passage 6 to the flue.

I preferably form cleaning doors 35 and 36 in the side walls of thecasing and arrange these doors above the bafies 28 and 33, so that anydirt collecting on'the latter can be removed therefrom by a rakeinserted through said doors.

A comparatively small drum 50 is located on, the top of the boilercasing 1 and has a feed water inlet valve 51 ccnnecting there- Shortpipes 58 connect the drum 52 with the drum 15.

In the construction illustrated in Fig.

1, it will be noted that the drum 52 is partially embedded within therear wall 2 of the casing and the opening 55 and plug 57 are locatedoutside of said rear wall. This arrangement of the drums 50 and 52, andthe pipes 53, permits the ready cleaning through the openings 54 and 55from the outside of the boiler casing.

. The products of combustion after passing through the passage 41, willalso serve to heat the feed water preheating pipe 53 during the upwardmovement of said products and prior to their passing outwardly throughthe outlet 6.

It will thus be noted that by the above described construction, a boileris provided in which the hot products of combustion efficiently heat theseveral tubes, drums, and pipes, and the arrangement of the baflling andwater preheating elements is such as to cause the absorption of the heatin an extremely eificient manner.

Furthermore, it will be noted that the construction is such thatiit iseasy for a man to get into the boiler casing and within the severalchambers provided in order to efliciently clean the several parts.

While I have described my invention as taking a particular form, it willbe understood that the various parts of my invention may be changedwithoutdeparting from the spirit thereof, and hence I do not'limitmyself to the precise construction set forth, but

consider that I am at liberty to make such changes and alterations asfairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters .Patent is:

1. The combination with aboiler having upright tubes spaced apart, of abafie arranged adjacent certain of said tubes, said bafile' includingsuperimposed rows of fire brick tiles spanning the space between saidtubes and resting against one side of the latter a bar positioned underthe bottom tiles, and means adjustably supported on the tubes forretaining said barin position to support the bafiie, substantially asdescribed 2. The combination with a boiler having upright tubes spacedapart, of a bafile arranged adjacent certain of said tubes, said baflieincluding superimposed rows of fire brick tiles spanning the spacebetween said tubes and resting against one side of the-

